All flannel pills to a certain degree. To help reduce pilling wash initially in cold water on the gentle cycle with 1/2 cup white vinegar (no soap).

After that use a gentle soap and wash with cold or warm water on the gentle cycle being consistent with temperature, if washing in cold rinse in cold and if washing in warm rinse in warm, turn garments and pillow cases inside out and try adding ½ cup white vinegar to the rinse cycle. (Do NOT use hot water, liquid fabric softeners, harsh detergents or high agitation, all of which increases pilling.) Tumble dry low, remove promptly.